Debugging simple R code -


for homework assignment i'm constructing simple code. r keeps returning x0 missing in evaluating p2. can't figure out why, because seems specified correctly in function pareto.

lab1 <- 50; mu <- 1; sigma <- 1 alpha1 <- 1 ; beta1 <- 1 lab2 <- 3; mu <- 5; sigma <- 5 alpha2 <- (1+sqrt(2)); x0 <- (10- 5* sqrt(2)) es1 <- lab1 * alpha1/beta1; vars1 <- lab1 * alpha1/(beta1^2) es2 <- lab2 * alpha2*x0/(alpha2-1); vars2 <- lab2 * alpha2*x0^2/((alpha2-1)^2*(alpha2-2)) mm <- trunc(es1 + es2 + 10*sqrt(vars1 + vars2)) p1 <- pgamma((0:(mm-1)+0.5), alpha1, beta1) ##cdf p1 <- c(p1,1) - c(0,p1) ## pdf pareto <- function (x, alpha2, x0) ifelse(x<x0 , 0, 1 - (x0/x)^alpha2) p2 <- integrate(pareto, lower = 0, upper = (mm-1)+0.5) ##cdf p2 <- c(p2,1) - c(0,p2) ## pdf

many in advance!

regards, vincent

a workaround specify defaults alpha2 , x0, i've done below, r use these values if aren't specified.

pareto <- function (x, alpha2 = (1+sqrt(2)), x0=(10- 5* sqrt(2))) ifelse(x<x0 , 0, 1 - (x0/x)^alpha2)

Comments

Post a Comment

Popular posts from this blog

php - cannot display multiple markers in google maps v3 from traceroute result -

i'm newbie in php mysql , google maps v3. have problems in google maps v3. made traceroute web based , map traceroute's result in google maps v3 final project of college education. have try many tutorials didn't work. have tried tutorials in forum nothing worked. problem cannot display multiple markers got location data database. maybe because i'm newbie , not know how do. confuse looping show markers. here code <?php error_reporting(e_all ^ (e_notice)); ini_set('max_execution_time', 360); $enable_log_user = false; global $ip, $host_name, $host_ip; $host = @$_post['host']; $trace = @$_post['trace']; $self = $_server['php_self']; include("phpsqlajax_dbinfo.php"); $connection = mysql_connect ('127.0.0.1', $username, $password); if (!$connection) { die('not connected : ' . mysql_error());} $db_selected = mysql_select_db($database, $connection); if (!$db_selected) { die ('can\'t use db : ...
Read more

c# - DetailsView in ASP.Net - How to add another column on the side/add a control in each row? -

i have detailsview control on page used edit various fields of record, works in respect. i looking way add 1 column (and if works, why not more) right, absolutely read-only, show same fields of record comparison purposes. i aware there no obvious way such thing out of box detailsview . have looked other controls (transposed gridview , recommended formview , listview ), nothing satisfies. have special data binding setup using detailsview , can't out of without losing features. anyone on how "hack in" additional columns (for display only) on detailsview ? the solution have now, use second detailsview , visible set false in aspx. in code, make sure databind hidden detailsview hosts data third column first, initial detailsview named itemdetails . and in item created event, pass third column html rendering of hidden controls (in last code block) : protected void itemdetails_itemcreated(object sender, eventargs e) { if (dataite...
Read more

css - Text drops down with smaller window -

i've adapted css use in website , can't quite figure out why 1 aspect of page acting way acting. basically, when shrink window below size horizontally, of text "drops down". becomes issue if user viewing website through ipad vertical orientation. can view issue here . i'm hoping make if window gets smaller, placement of text remains intact. the problem area not have enough space put both side navigation , content on 1 line. make automatically adjust page's width when exceeds decrements of width. this code example, , highly unlikely work. if see css more clearly, provide exact code. @media , (max-width:960px) { /* assuming #wrapper 960px across */ #content {width:560px;} /* opposed 720px */ } edit the content drops down @ 980px, have shrink width after there. @media , (max-width:980px) { #container {width:520px;} }
Read more